Never call back to an unexpected missed call from an unrecognised number. If it was important they will call back later or leave a message.

Calls where the phone rings once and cuts off are often attempting the Wangiri scam. Calling back is either to a premium rate number or is to an ordinary number that plays a message telling the caller there is a problem and to call a different number, the latter number being a premium rate number.

A Google search for the number, using 020 3519 0760 or 0203 519 0760 or 02035 190760 or 02035190760 may give further clues. The CLI may even be faked or spoofed and not actually represent a valid or active telephone number.

Ian01 wrote on May 20^th, 2019 at 10:35pm:


It depends on your personality type.

As long as you establish that the number you are calling is not going to cost you anything and is not some covert premium rate or directory enquiries number then you may still want to establish who the call was from in case it was from.

However calling back all numbers that call you indiscriminately without checking out the likely call charges is not a good idea.

These days the majority of the most undesirable callers in overseas scamming call centres cannot in any case be called back because they have spoofed an apparently legitimate but in fact non existent UK CLI number despite being thousands of miles away in India (mainly) or the Philippinnes (only very occasionally where scams are involved).

bhaskar wrote on Jun 25^th, 2020 at 5:04pm:


Depending on the handset, you should be able to block both numbers from calling you again.

bhaskar wrote on Jun 27^th, 2020 at 2:04pm:


Ah now I understand.  Sadly not a lot you can do.

I rarely get spam calls on my mobile.